Caramelized sugar is sugar that has been heated until it melts and transforms into a golden-brown syrup with a rich, complex flavor and aroma. Caramelized sugar is commonly used as a flavoring agent and topping in desserts such as flans, custards, and caramelized fruits. It adds depth and sweetness to dishes, enhancing their overall flavor profile. Caramelized sugar can also be used as a decorative element in desserts, such as spun sugar decorations or caramelized sugar shards.